This is our version of the 20m shuttle run test, which is commonly used to estimate VO2MAX levels. In this version every shuttle is called out so as to aid both coaches and participants in keeping track of levels and shuttles reached. 
The  guide for how to conduct this test is in pdf format and downloadable from the BLEEP TEST PAGE.
If you are a coach why not try our team monitor forms. They help you to efficiently  track your teams performance as the test is conducted.